Rahul (Aamir Khan) has just heard of the death of his sister and brother-in-law. He has to look after their three kids, Sunny, Muni and Vicky. They are hell. One day the kids sneak out to the fair and they come across Vayjanti (Juhi Chawla). Vayjanti has run away from home and the kids suggest that she stay at their place without their mama knowing. Will their plan work out?